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镍元素符号Ni，原子序数28。银白色有光泽的面心立方晶格的金属。有延展性和磁性。熔点1455℃，沸点2730℃，相对密度8.90。溶于稀硝酸，微溶于盐酸或硫酸，不溶于水、氨水。块状物在水及空气中在常温下很稳定，但在氧气中加热镍丝能燃烧，镍板在空气中加热时表面氧化。通常用于制货币、实验器皿、各种合金钢、玻璃着绿色、电镀及氢化反应的催化剂等。
| Nominal mass | Accurate mass | % Natural abundance | Chemical form | Enrichment available % |
| 54 Ni | oxide | 95+ | ||
| 58 Ni | 57.9353462 (16) | 68.0769 | metal, oxide, sulphate | 99+ |
| 60 Ni | 59.9307884 (16) | 26.2231 | metal, oxide | 95 - 99+ |
| 61 Ni | 60.9310579 (16) | 1.1399 | metal, oxide, sulphate | 89 - 94+ |
| 62 Ni | 61.9283461 (16) | 3.6345 | metal | 96 - 98+ |
| 64 Ni | 63.9279679 (17) | 0.9256 | metal, oxide | 84 - 98+ |
Nickel Isotopes are used for the production of several radioisotopes. Ni-64 is used for the production of Cu-64 which is used in radioimmunotherapy. Ni-61 can be used for the production of the PET radioisotope Cu-61. Ni-62 is used for the production of the radioisotope Ni-63 which can be used as an XRF source, as an electron capture source in gas chromatographs and as a power source in microelectromechanical systems. Ni-58 can be used for the production of the radioisotope Co-58. Ni-60 is used for the production of Co-57 which is used in bone densitometry and as a gamma camera reference source. Ni-60 is also used as an alternative for the production of Cu-61, but the route via Ni-61 is more common. Finally, most stable Nickel Isotopes have been used to study human absorption of Nickel. Ni 64 is currently in high demand.
武汉易司拓普科技有限公司能提供丰度99.9%以及更高丰度范围内各种纯度规格的镍Ni-58，镍Ni-60，镍Ni-61，镍Ni-62，镍Ni-64的镍同位素产品。
